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154 条记录 (耗时 0.015 秒)

    GAIN-CONTROL STAGE FOR A VARIABLE GAIN AMPLIFIER
    3.
    发明公开
    GAIN-CONTROL STAGE FOR A VARIABLE GAIN AMPLIFIER 审中-公开

    公开(公告)号：EP3672075A1

    公开(公告)日：2020-06-24

    申请号：EP19154834.6

    申请日：2019-01-31

    申请人： IHP GmbH - Innovations for High Performance Microelectronics / Leibniz-Institut für innovative Mikroelektronik

    发明人： RITO, Pedro ,  GARCIA LOPEZ, Iria ,  KO, Minsu ,  KISSINGER, Dietmar

    IPC分类号： H03G1/00 ,  H03F3/45 ,  H03G1/04 ,  H03G3/30

    摘要： The invention relates to a gain-control stage (100) for generating gain-control signals (V c+ , V c- ) for controlling an external variable-gain amplifying unit (101). The gain-control stage comprises a first (102) and a second differential amplifier unit (112) that receive, at a respective input interface (104,114) a reference voltage signal (V Ref ) and a variable gain-control voltage signal (V GC ). The second differential amplifier unit is configured to provide, via a second output interface (120), a control voltage signal (Vi) to a controllable first current source (106) of the first differential amplifier unit (102). The first differential amplifier unit (102) is configured to provide, via a first output interface (110), the first and the second gain-control signal (V C+ , V C- ) in dependence on the variable gain-control voltage signal (V GC ), the reference voltage signal (V Ref ) and a first biasing current (I B1 ) that depends on the control voltage signal.

    AUDIO SIGNAL PROCESSING DEVICE AND AUDIO SIGNAL PROCESSING METHOD
    5.
    发明公开
    AUDIO SIGNAL PROCESSING DEVICE AND AUDIO SIGNAL PROCESSING METHOD 审中-公开
    VORRICHTUNG ZUR AUDIOSIGNALVERARBARITUNG UND VERFAHREN ZUR AUDIOSIGNALVERARBEITUNG

    公开(公告)号：EP2273673A4

    公开(公告)日：2013-12-25

    申请号：EP09730605

    申请日：2009-04-10

    申请人： SHARP KK

    发明人： URATA SHIGEFUMI

    IPC分类号： H03G1/04 ,  G10L21/02 ,  H03G3/20 ,  H03G5/16 ,  H03G7/06 ,  H03G9/02 ,  H04R3/04

    CPC分类号： H03G5/165 ,  H03G9/025 ,  H04R3/04

    摘要： A technique is provided that can reduce any unnecessary distortion components of an input audio signal that arises as a result of varying the gain of the signal regardless of the type of the input audio signal. As shown in FIG. 1 , as signal Sin is input to audio signal processing apparatus 10, signal branching section 11 divides the signal Sin for first through N-th routes R1 through Rn. On the first through N-th routes R1 through Rn, first through N-th front BPFs 111 through 11n respectively selects the predetermined frequency bands set for the signals and outputs them to first through N-th AGCs 121 through 12n. The first through N-th AGCs 121 through 12n respectively adjusts the gains of the acquired signals and output them to first through N-th back BPFs 131 through 13n. The first through N-th back BPFs 131 through 13n respectively eliminate the distortion components outside the bands by means of band limiting processes. Adder 60 synthetically combines the signals respectively subjected to band limiting processes and outputs the synthesized signal to a post-process processing means.

    摘要翻译： 提供了一种技术，其可以减少由于改变信号的增益而出现的输入音频信号的任何不必要的失真分量，而不管输入音频信号的类型如何。 如图所示。 如图1所示，当信号Sin输入到音频信号处理设备10时，信号分支部分11将信号Sin分为第一至第N路径R1至Rn。 在第一至第N路径R1至Rn中，第一至第N前置BPF 111至11n分别选择为这些信号设置的预定频带，并将它们输出至第一至第N AGC 121至12n。 第一至第N AGC 121至12n分别调整获取的信号的增益并将它们输出至第一至第N后向BPF 131至13n。 第一至第N后向BPF 131至13n分别通过频带限制处理消除频带外的失真分量。 加法器60对分别经受频带限制处理的信号进行合成组合，并将合成信号输出到后处理处理装置。

    SIGNAL PROCESSING APPARATUS, TRANSMITTER, RECEIVER AND METHOD
    6.
    发明公开
    SIGNAL PROCESSING APPARATUS, TRANSMITTER, RECEIVER AND METHOD 有权
    信号处理设备，发射机，接收机和方法

    公开(公告)号：EP2502365A1

    公开(公告)日：2012-09-26

    申请号：EP11818935.6

    申请日：2011-02-17

    申请人： Huawei Technologies Co. Ltd.

    发明人： NEBOJSA, Stojanovic

    IPC分类号： H04B10/18 ,  H04N3/23 ,  H03G1/04 ,  H04L25/02 ,  H04L25/03

    CPC分类号： H04L25/03878

    摘要： A signal processing apparatus (100, 300, 400) for correction of a distortion introduced by a signal processing path into a processed signal is provided The signal processing apparatus (100, 300, 400) comprises a transformer (110, 430a, 430b) for transforming the processed signal into a transformed signal in frequency domain, a processor (150, 350, 420) for determining a first correction function (C
    1 ) and a second correction function (C
    2 ) upon the basis of a transfer function of the signal processing path, a first multiplier (120, 433a, 433b) for multiplying values of the transformed signal with coefficients of the first correction function (C
    1 ) to obtain a first corrected signal, a signal reverser (130, 140, 437a, 437b, 439a, 439b) for reversing an order of values in a copy of the transformed signal to obtain a reversed transformed signal, a second multiplier (125, 435a, 435b) for multiplying values of the reversed transformed signal with coefficients of the second correction function (C
    2 ) to obtain a second corrected signal, and an adder (160, 440a, 440b) for adding the first corrected signal and the second corrected signal to obtain a corrected output signal

    摘要翻译： 提供了一种用于将由信号处理路径引入的失真校正为处理后的信号的信号处理设备（100,300,400）。信号处理设备（100,300,400）包括用于将由信号处理路径引起的失真校正为处理后的信号的变压器（110,430a，430b） 将经处理的信号变换成频域中的经变换的信号;处理器（150,350,420），用于基于信号的传递函数来确定第一校正函数（C 1）和第二校正函数（C 2） 处理路径;第一乘法器（120,433a，433b），用于将变换后的信号的值与第一校正函数（C 1）的系数相乘以获得第一校正信号;信号反转器（130,140,​​437a，437b， 439a，439b），用于反转变换信号的副本中值的顺序以获得反相变换信号;第二乘法器（125,435a，435b），用于将反相变换信号的值与第二校正函数的系数相乘 （C 2）以获得第二校正信号;以及加法器（160,440a，440b），用于将第一校正信号和第二校正信号相加以获得校正输出信号

    Method for standardizing a power detector
    10.
    发明公开
    Method for standardizing a power detector 审中-公开
    标准法规法规Leistungsdetektors

    公开(公告)号：EP1160578A1

    公开(公告)日：2001-12-05

    申请号：EP00304634.9

    申请日：2000-05-31

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： Eckl, Wolfgang Franz

    IPC分类号： G01R21/14 ,  H03G1/04

    CPC分类号： G01R21/14 ,  H04W52/36

    摘要： The invention relates to a method for standardizing a power detector used in a transmitter stage.
    The invention is providing a method for standardizing a power detector which permits an essentially temperature-independent standardization of the power detector.
    For this purpose, a signal whose power level alternately changes at predefined times in such a way that the predefined power range is essentially completely passed through is initially applied to the input of the power detector. The output signal of the power detector is then evaluated in order to standardize it.

    摘要翻译： 本发明涉及一种用于在发射机级中使用的功率检测器的标准化方法。 本发明提供了一种使功率检测器标准化的方法，其允许功率检测器基本上与温度无关的标准化。 为此，其功率电平在预定义时间以预定功率范围基本上完全通过的方式交替变化的信号最初被施加到功率检测器的输入端。 然后对功率检测器的输出信号进行评估，以使其标准化。